Non-destructive Evaluation of Absolute Stress in Steel Members Using Shear-Wave Spectroscopy

查看全文 作　　者：Liu [1]Diankun;He [1]Jingbo;Li [1]Zuohua;Teng [1]Jun

机构地区：[1]Shenzhen Graduate School,Harbin Institute of Technology

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》索引2018年第35卷第2期,共8页

基　　金：supported by the National Key Research and Development Program of China (No. 2016YFC0701102);the National Nature Science Foundation of China(No.51538003);the Shenzhen Technology Innovation Program (No.JSGG20150330103937411) 摘　　要：Non-destructive measurement of absolute stress in steel members can provide useful information to optimize the design of steel structures and allow the safety of existing structures to be evaluated.This paper investigates the non-destructive capability of ultrasonic shear-wave spectroscopy in absolute stress evaluation of steel members.The effect of steel-member stress on the shear-wave amplitude spectrum is investigated,and a method of absolute stress measurement is proposed.Specifically,the process for evaluating absolute stress using shear-wave spectroscopy is summarized.Two steel members are employed to investigate the relationship between the stress and the frequency in shear-wave echo amplitude spectrum.The H-beam loaded by the universal testing machine is evaluated by the proposed method and the traditional strain gauge method for verification.The results show that the proposed method is effective and accurate for determining absolute stress in steel members. 关键词：非破坏性钢结构光谱学应力波浪评估压力测量信息优化

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Non-destructive Evaluation of Absolute Stress in Steel Members Using Shear-Wave Spectroscopy

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